<?hh // strict
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the "hack" directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

function show<T>(T $x): void {}

function test(): void {
  $v = Vector {
    function($x) {
      return $x;
    },
  };
  $v[0] = function($x) use ($v) {
    return $v[0]($x);
  };
  $v[0](1);
}
